What is an Atom?
The atom is a basic unit of matter that consists of a dense central nucleus surrounded by a cloud of negatively charged electrons. The atomic nucleus contains a mix of positively charged protons and electrically neutral neutrons. An atom is classified according to the number of protons and neutrons in its nucleus: the number of protons determines the chemical element, and the number of neutrons determines the isotope of the element.
Major Contributors |
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John Dalton John Dalton is the person who spear headed The Atomic Theory and made the foundations of The Modern Atomic Theory |
Louis de Broglie Louis de Broglie proposed that electrons could behave as waves under some conditions and that electron don't move in orbits |
Ernest Rutherford Ernest Rutherford performed the Gold Foil Experiment and discovered the Nucleus that holds the electron into place and protons inside. |
Plum Pudding model A model developed by J.J. Thompson |
Solar Model A model developed by Niels Bohr |
Nuclear Model A model developed by Ernest Rutherford |